For starters, it is overclocked beyong 10% or more? If you have a medium to high OC, you will need to increase the SB voltages as well as the NB a tad help stable it out. Remember, lots of devices run through the SB, especially that Intel ICH9R hub.
AHCI on Intel is the same thing as single disc RAID in RAID ready more as long as you choose the correct driver at 3rd party install in OS set up. If you do choose AHCI you cannot change to RAID or RAID ready and into RAID later. If you start w/ RAID ready, it installs as AHCI/RAID Ready untill you choose to migrate a RAID or just leave it as so.
The latest and correct for this mobo is v8.7.0.1007 @ 1/9/2009 for the Intel ICH9R Intel 4 & 3 Series drivers






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